Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 161716
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
116 PM EDT Mon Apr 16 2018

Coastal waters from the Merrimack River MA to Watch Hill RI out to
25 NM

ANZ200-170600-
116 PM EDT Mon Apr 16 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
A strong area of low pres will lift over New England and its
adjacent waters this afternoon, then head NE toward the Maritimes
Tue and Wed. Brief weak high pres will move over the water Wed,
followed by a clipper low on Thu. This low should linger near the
Maritimes for Fri.

For information on possible hazardous weather beyond the 24-36
hour forecast period, please visit www.weather.gov/boston and
follow the Current Hazards link above the map on the left.

$$

ANZ250-170600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.THIS AFTERNOON...E winds 30 to 35 kt with gusts up to 45 kt.
Seas 13 to 17 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...SE winds 30 to 35 kt with gusts up to 40 kt, becoming
S 10 to 15 kt with gusts up to 25 kt after midnight. Seas 10 to
15 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 6 to
9 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 7 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. A
chance of showers.
.THU...SE winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ251-170600-
Massachusetts Bay and Ipswich Bay-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.THIS AFTERNOON...E winds 25 to 30 kt with gusts up to 40 kt.
Seas 11 to 16 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...SE winds 25 to 30 kt with gusts up to 40 kt, becoming
S 10 to 15 kt with gusts up to 25 kt after midnight. Seas 9 to
12 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to
8 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.WED...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.WED NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. A chance of showers.
.THU...SE winds 5 to 10 kt. Seas around 2 ft. Showers likely.
.THU NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.
.FRI...N winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ231-170600-
Cape Cod Bay-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...E winds 25 to 30 kt with gusts up to 40 kt.
Seas 4 to 7 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...SE winds 20 to 25 kt with gusts up to 40 kt, becoming
SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to
5 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.WED...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.THU...S winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.THU NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ254-170600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.THIS AFTERNOON...SE winds 25 to 30 kt with gusts up to 45 kt.
Seas 10 to 15 ft, except 9 to 11 ft S and E of Nantucket. Patchy
fog. Rain. Vsby 1 NM or less.
.TONIGHT...SE winds 25 to 30 kt with gusts up to 40 kt, becoming
SW 10 to 15 kt with gusts up to 25 kt after midnight. Seas 8 to
11 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.TUE NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 5 to 8 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
7 ft.
.WED NIGHT...W winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers.
.THU...S winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft.
A chance of showers.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers.
.FRI NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ255-170600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...SE winds 25 to 30 kt with gusts up to 40 kt.
Seas 7 to 10 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...S winds 20 to 25 kt with gusts up to 40 kt, becoming
SW 10 to 15 kt with gusts up to 25 kt after midnight. Seas 8 to
10 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 7 to 10 ft.
.TUE NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 6 to 9 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
8 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt, becoming
SW 5 to 10 kt with gusts up to 20 kt after midnight. Seas 4 to
7 ft. A chance of showers.
.THU...S winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft.
A chance of showers.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 7 ft. A chance of showers.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
7 ft.
.FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ256-170600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...SE winds 25 to 30 kt with gusts up to 40 kt.
Seas 8 to 11 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...S winds 20 to 25 kt, becoming SW 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 9 to 11 ft. Patchy fog. Vsby
1 NM or less.
.TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to
10 ft.
.TUE NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 6 to 9 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
8 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming
SW 5 to 10 kt after midnight. Seas 4 to 7 ft. A chance of
showers.
.THU...S winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft.
A chance of showers.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 7 ft. A chance of showers.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
7 ft.
.FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ232-170600-
Nantucket Sound-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...SE winds 25 to 30 kt with gusts up to 40 kt.
Seas 4 to 6 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...S winds 20 to 25 kt with gusts up to 40 kt, becoming
SW 10 to 15 kt with gusts up to 25 kt after midnight. Seas 3 to
5 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.WED...W winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 25 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of
showers.
.THU...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ233-170600-
Vineyard Sound-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...SE winds 20 to 25 kt with gusts up to 40 kt.
Seas 3 to 5 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...S winds 20 to 25 kt with gusts up to 40 kt, becoming
SW 10 to 15 kt with gusts up to 25 kt after midnight. Seas 3 to
5 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of
showers.
.THU...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...W winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.
.FRI...NW winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ234-170600-
Buzzards Bay-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...SE winds 20 to 25 kt with gusts up to 40 kt.
Seas 3 to 4 ft. Patchy fog. Rain with isolated tstms. Vsby 1 NM
or less.
.TONIGHT...S winds 15 to 20 kt with gusts up to 40 kt, becoming
SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to
4 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of
showers.
.THU...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.THU NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.
.FRI...NW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.

Winds and seas higher in and near tstms.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ235-170600-
Rhode Island Sound-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...SE winds 25 to 30 kt with gusts up to 40 kt.
Seas 7 to 10 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...S winds 20 to 25 kt with gusts up to 35 kt, becoming
SW 10 to 15 kt with gusts up to 25 kt after midnight. Seas 7 to
10 ft. Patchy fog. A chance of rain. Vsby 1 NM or less.
.TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.TUE NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 5 to 8 ft.
.WED...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
7 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 25 kt, becoming
SW 5 to 10 kt after midnight. Seas 3 to 5 ft. A chance of
showers.
.THU...S winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.
.THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers.
.FRI...NW winds around 10 kt. Seas 3 to 5 ft. A chance of
showers.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ237-170600-
Block Island Sound-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...SE winds 20 to 25 kt with gusts up to 40 kt.
Seas 7 to 10 ft. Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 6 to 9 ft. Patchy fog. Vsby
1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to
8 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 6 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
S around 5 kt after midnight. Seas 3 to 5 ft. A chance of
showers.
.THU...S winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.
.THU NIGHT...NW winds around 10 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.FRI...NW winds around 10 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ230-170600-
Boston Harbor-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...E winds 25 to 30 kt with gusts up to 35 kt.
Waves 5 to 8 ft, except 9 to 13 ft at the outer harbor entrance.
Patchy fog. Rain. Vsby 1 NM or less.
.TONIGHT...SE winds 25 to 30 kt, becoming SW around 10 kt with
gusts up to 20 kt after midnight. Waves 4 to 7 ft. Patchy fog.
Rain. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft, except 3 to 5 ft at the outer harbor entrance.
.TUE NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft.
.WED...W winds around 10 kt. Gusts up to 20 kt in the afternoon.
Waves around 2 ft.
.WED NIGHT...W winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.THU...SE winds around 5 kt. Waves 1 foot or less. Showers
likely.
.THU NIGHT...N winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.
.FRI...N winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ236-170600-
Narragansett Bay-
116 PM EDT Mon Apr 16 2018

...GALE WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...SE winds 20 to 25 kt with gusts up to 40 kt.
Waves 3 to 5 ft, except 5 to 8 ft at the bay entrance. Patchy
fog. Rain with isolated tstms. Vsby 1 NM or less.
.TONIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Gusts up to 25 kt. Waves 2 to 4 ft, except 5 to 8 ft at
the bay entrance. Patchy fog. A chance of rain. Vsby 1 NM or
less.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 3 to
5 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. Waves 2 to 4 ft.
.WED...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
4 ft.
.WED NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers.
.THU...S winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
.THU NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers.
.FRI...NW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
.FRI NIGHT...NW winds 5 to 10 kt. Waves around 2 ft.

Winds and waves higher in and near tstms.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

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